Presser control for sewing-machines.



,1. 1. GVOELLNER.

PRESSER CONTROL FOR SEWING MACHINES.

' APPLICATION .mzn AUG.'I0. ma.

1,212,761. Patented Jan. 16,1917.

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JOSEPH J. GQELLNEB, Q F s r. LOUIS, MISSOURI, ASSIGNOIR TO Lannie rggaqnmn GOMBANY, as S r LOUI MISseuR A c aseaum Q1? MIWHM rmss e Q NTBQL F R SEWlNQrMAQIiINEi Specification Letters ream.

atented J an. 1.6, .17-

[0 all whom it may concern.-

Be it known that I, JOSEPH J. GQELLNER, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Presser Control for Sewing-Machines, of which the{ following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to an improvement in the presser foot operating mechanism of a leather sewing machine of the type connnonly designated the Goodyear machine; and which is disclosed in United States Letters Patent No.i 473,870 of April 26, 1892.

The object of! the invention is to provide an arrangement whereby the presser foot may be automatically released to engage the work immediately upon the starting of the machine, so that both hands of the operator may be left free to llOlCll the work in position.

By referenceto the accompanying drawings-in which Figure his a side elevation of the device, Fig. 2, a side view of parts in shifted positions-4t will be understood that the numeral 1 designates generally'the frame of the machine, in which is mounted the cus tomary operating shaft carrying a cam 2. The presser foot which is; designated 4 is pivotally mounted at 4 in the customary fashion so that it may be swung upwardly and downwardly into cotiperation with the work which is supported on the Work'support 5. A handle 6 is provided whereby the presser foot may be swung away from the work-support 5 to release the work. The rear end of the presser foot is"pivotally con nected to a frame member 7 which forms a mounting for the measuring mechanism of the thread throw-off, and said frame 7 is movable vertically by the rocking of the presser foot 4. A spring 8 cooperates with the frame member 7 to urge it upwardly. In a movable block mounted in the bifur cated" lower portion of frame member 7 is ivoted an oscillating link 9 connected at its upper end to a connecting rod 10 which is reciprocated by the movement of a bell crank 11% to which movement is imparted by the cam 2. These are all well known pants of the thread measuring mechanism, so that 'it will be readily understood that upon the starting of the machine, cam 2 will be rotated to reciprocate rod 10, as is permitted by the pivotal oonnectionrthrough link 9 and the space between the divergent arms of frame member 7.

(3n the retaining plate 12 of the feed slide, I mount an upstanding flat spring member 14 having a rearwardly projecting portion 14 and an upwardly extending terminal portion 14 The rearwardly or horizontally extending portion 14 is adapted to fit over a shoulder 15 carried on the frame memberi7, when said frame member isin its lowered position which it occupies when the presser foot 4 is swung away from the Worksupport 5. This shoulder may be formed integrally on the frame member 7 or it may be provided in the form of a pin, lug, or screw suitably seated in'th'e said frame memher. When the spring retaining member 14 is in engagement with the shoulder portion 15, it holds the frame member 7 in its lowered position, and as a consequence holds the presser foot in its raised position. In this position, the operator may utilize both hands to insert the work between the presser foot and the work-support. When ready to start the machine, the operator presses the clutch pedal with his foot, which starts the machine in the well known fashion by throwing the driving mechanism into engagement with the operating shaft. Immediately, upon the starting of the shaft, the cam 2 is rotated to rock bell crank 11 and thrust the connecting rod 10 forwardly. When this occurs, the forward end of rod 10 comes into contact with the terminal portion 14 of the spring retaining member and forces the spring forwardly to such an extent that it is removed from over the shoulder 15. There being nothing further to retain the frame 7 in its lowered position, it is immediately raised by action of spring 8, and presser foot 4 moved into operative engagement with the work on the work-support 5.

By means of this arrangement, it will be obvious that the operator is relieved from the necessity of manually operating the presser foot to( insert the work, and thereby is left with both hands free to properly manipulate the work and hold the parts in proper relative position While he is inserting it into the machine.

What I claim is:

1. In combination with the presser foot and attached thread measure frame, of a resilient retaining member adapted to engage the frame and retain it in its lowered position, and a reciprocating member moVa-' ble during operation of the machine and adapted to engage the retaining member to release the measure frame.

2. In a sewing machine in combination with the presser foot and the thread measure frame s'hiftable therewith, of a resiliently operating retaining member arranged to engage the frame when the presser foot Copies of this patent may be obtained for 'is raised, and having a portion engageable by the thread throw-off mechanism to release said frame and permit the movement of the presser foot to operative position.

3. In a sewing machine in combination with the presser foot, the thread-measuring frame movable therewith, and the throwofi" mechanism mounted on said frame, of

five cents each, by addressing the Commissioner of Patents, Washington, D 0. 

